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Device for high-resolution measurement of magnetic fields

  • US 6,690,162 B1
  • Filed: 11/16/2001
  • Issued: 02/10/2004
  • Est. Priority Date: 10/04/1999
  • Status: Expired due to Term
First Claim
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1. A device for high-resolution measurement of magnetic fields, having a network of junctions between superconductors which exhibit Josephson effects, the network comprising a plurality of closed cells, each cell having at least two junctions connected in a superconducting fashion, wherein at least three of said cells are connected electrically and can be energized in such a way that a time-variant voltage drops across at least two junctions of each of said at least three cells, the time average of which voltage does not vanish, and wherein said at least three cells are configured differently geometrically in such a way that the magnetic fluxes enclosed by the cells in the case of an existing magnetic field differ from one another in such a way that a frequency spectrum of a voltage response function has no significant elementary-flux-quantum-periodic (Φ

  • 0-periodic) component with reference to the magnetic flux, and if a discrete frequency spectrum exists, the contribution of the Φ

    0-periodic component of the discrete frequency spectrum is not dominant by comparison with a non-Φ

    0-periodic component of the discrete frequency spectrum.

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